英语词汇principal diagonal是什么意思，principal diagonal的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	principal diagonal
释义	DEFINITIVE EXAMPLES 权威例句〔trace〕The sum of the elements of the principal diagonal of a matrix.一矩阵中主对角线元素之和美国传统
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